85. CYPERACE.E. C7 



Durham. Judging from the rei)orted localities, B. com- 

 jiressus attains an elevation in the north of England, that 

 will warrant its reference to the superagrarian zone by 

 altitude, although perhaps it may not reach that zone by 

 latitude. 



1183. BiiYSMUS EUFUS, Link. 



Area ****** 7 * 9 * 11 12 13 14 15 IC 17 18. 



South limit in Anglesea, Caernarvon, Durham. 



North Unlit in Shetland, Orkney, Hebrides, 



Estimate of pro\Tinces 10. Estimate of counties 30. 



Latitude 53 — 61. Scottish type of distribution. 



Agi'ai'ian region. Inferagrarian — Superagrarian zones. 



Descends to the sea level, in North Wales. 



Ascends, at the sea level, to the North Isles. 



Range of mean annual temperature 49 — 45. 



Native. Littoral. The localities on the shores of An- 

 glesea and Caernarvon may be considered to bring this 

 species slightly within the inferagrarian zone, although it 

 does not descend to that zone on the eastern side of Eng- 

 land. Its distribution will aflford a good illustration of 

 the Scottish or boreal type of distribution, by a series of 

 localities, commencing with Durham, and including neai'ly 

 all (if not all) the maritime counties of Scotland, and pass- 

 ing downward again to Lancashire, on the west side of 

 England, with outljing stations in North Wales. 



1184. SCIRPUS LACUSTRIS, Limi. 



Area general. 



South limit in Cornwall, Dorset, Sussex, Kent. 



